如何将HashMap保存到共享首选项? [英] How to save HashMap to Shared Preferences?

问题描述

如何在Android中将 HashMap 保存到共享的首选项?

How can I save a HashMap to Shared Preferences in Android?

推荐答案

我不建议将复杂对象写入SharedPreference.相反，我会使用ObjectOutputStream将其写入内部存储器.

I would not recommend writing complex objects into SharedPreference. Instead I would use ObjectOutputStream to write it to the internal memory.

File file = new File(getDir("data", MODE_PRIVATE), "map");    
ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream(file));
outputStream.writeObject(map);
outputStream.flush();
outputStream.close();

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